I've noticed that the managers and companies that do this seem to be fostering cult-like behavior. It's obviously deleterious to productivity, but where people

I've noticed that the managers and companies that do this seem to be fostering cult-like behavior. It's obviously deleterious to productivity, but where people consider themselves to be doing it of their own volition (as opposed to being threatened with termination), it does seem to breed loyalty and dedication. The non-loyal get weeded out and the half convinced convince themselves that they wouldn't be working 100 hours a week without a good reason. Economically it only makes no sense if you assume that companies are optimizing for productivity.